现在晚上凉快点了,
下班回家可以学会东东了。。
这次的书是一个印度人写的。
按着示例代码弄起先。。
#!/usr/bin/env python # -*- coding: utf-8 -*- import numpy import sys from datetime import datetime def numpysum(n): a = numpy.arange(n) ** 2 b = numpy.arange(n) ** 3 return a + b def pythonsum(n): a = range(n) b = range(n) c = [] for i in range(len(a)): a[i] = i ** 2 b[i] = i ** 3 c.append(a[i] + b[i]) return c n = 4000 start = datetime.now() c = pythonsum(n) delta = datetime.now() - start print c[-2:] print delta.microseconds start = datetime.now() c = pythonsum(n) delta = datetime.now() - start print c[-2:] print delta.microseconds